1 // 2 // System.Reflection.ConstructorInfo Test Cases 3 // 4 // Authors: 5 // Gert Driesen (drieseng@users.sourceforge.net) 6 // 7 // (c) 2007 Gert Driesen 8 // 9 // Permission is hereby granted, free of charge, to any person obtaining 10 // a copy of this software and associated documentation files (the 11 // "Software"), to deal in the Software without restriction, including 12 // without limitation the rights to use, copy, modify, merge, publish, 13 // distribute, sublicense, and/or sell copies of the Software, and to 14 // permit persons to whom the Software is furnished to do so, subject to 15 // the following conditions: 16 // 17 // The above copyright notice and this permission notice shall be 18 // included in all copies or substantial portions of the Software. 19 // 20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 27 // 28 29 using System; 30 using System.Reflection; 31 using System.Runtime.Serialization; 32 33 using NUnit.Framework; 34 35 namespace MonoTests.System.Reflection 36 { 37 [TestFixture] 38 public class ConstructorInfoTest 39 { 40 [Test] Invoke()41 public void Invoke () 42 { 43 ConstructorInfo ctor = typeof (Foo).GetConstructor ( 44 BindingFlags.Public | BindingFlags.Instance, null, 45 Type.EmptyTypes, null); 46 Foo foo = ctor.Invoke (new object [0]) as Foo; 47 Assert.IsNotNull (foo, "#1"); 48 } 49 50 [Test] InvokeAbstract()51 public void InvokeAbstract () 52 { 53 object obj = FormatterServices.GetUninitializedObject (typeof (Foo)); 54 ConstructorInfo ctor = typeof (AbstractFoo).GetConstructor ( 55 BindingFlags.Instance | BindingFlags.NonPublic, null, 56 Type.EmptyTypes, null); 57 Assert.IsNotNull (ctor, "#A1"); 58 object ret = ctor.Invoke (obj, new object [0]); 59 Assert.IsNull (ret, "#A2"); 60 61 try { 62 ctor.Invoke (null, new object [0]); 63 Assert.Fail ("#B1"); 64 } catch (TargetException ex) { 65 // Non-static method requires a target 66 Assert.AreEqual (typeof (TargetException), ex.GetType (), "#B2"); 67 Assert.IsNull (ex.InnerException, "#B3"); 68 Assert.IsNotNull (ex.Message, "#B4"); 69 } 70 71 try { 72 ctor.Invoke (new object [0]); 73 Assert.Fail ("#C1"); 74 } catch (MemberAccessException ex) { 75 // Cannot create an abstract class 76 Assert.AreEqual (typeof (MemberAccessException), ex.GetType (), "#C2"); 77 Assert.IsNull (ex.InnerException, "#C3"); 78 Assert.IsNotNull (ex.Message, "#C4"); 79 } 80 } 81 82 [Test] InvokeOptionalArguments()83 public void InvokeOptionalArguments () 84 { 85 var constructor = typeof (Optional).GetConstructors () [0]; 86 try { 87 constructor.Invoke (BindingFlags.Default, null, null, null); 88 Assert.Fail ("#1"); 89 } catch (TargetParameterCountException) { 90 } 91 92 object[] parameters = new [] { Type.Missing, Type.Missing, Type.Missing }; 93 var instance = constructor.Invoke (BindingFlags.InvokeMethod | BindingFlags.CreateInstance, null, parameters, null); 94 Assert.IsNotNull (instance, "#2a"); 95 } 96 97 abstract class AbstractFoo 98 { 99 } 100 101 class Foo : AbstractFoo 102 { 103 } 104 105 [Test] 106 [ExpectedException (typeof (MemberAccessException))] InvokeOpenGenericType()107 public void InvokeOpenGenericType () { 108 typeof (Gen<>).GetConstructor (Type.EmptyTypes).Invoke (null); 109 } 110 111 public class Gen<T> { Gen()112 public Gen() { 113 } 114 } 115 116 class Optional 117 { Optional(string caption = null, string value = null, string layoutName = null)118 public Optional (string caption = null, string value = null, string layoutName = null) 119 { 120 } 121 } 122 123 [Test] 124 [ExpectedException (typeof (TargetException))] InvokeWithNullTarget()125 public void InvokeWithNullTarget () 126 { 127 typeof (Foo).GetConstructors ()[0].Invoke (null, BindingFlags.Default, null, null, null); 128 } 129 130 [Test] 131 [ExpectedException (typeof (TargetException))] InvokeWithWrongTarget()132 public void InvokeWithWrongTarget () 133 { 134 typeof (Foo).GetConstructors ()[0].Invoke (new object (), BindingFlags.Default, null, null, null); 135 } 136 137 [Test] ContainsGenericParametersOnGenericType()138 public void ContainsGenericParametersOnGenericType () 139 { 140 var ctor = typeof (Gen<>).GetConstructor (Type.EmptyTypes); 141 Assert.IsTrue (ctor.ContainsGenericParameters); 142 } 143 144 [Test] ConstructorInfoModule()145 public void ConstructorInfoModule () 146 { 147 Type type = typeof (Foo); 148 ConstructorInfo co = type.GetConstructors ()[0]; 149 150 Assert.AreEqual (type.Module, co.Module); 151 } 152 } 153 } 154